var MargenH = 200; var MargenV = 100;
var ELM = (document.getElementById);
var IE5 = ((ELM) && (navigator.userAgent.toLowerCase().indexOf('msie')!=-1) && !(window.opera));
if (IE5) window.onresize=Dimensionar;
function Dimensionar () {
document.getElementById('contenedor').style.width = (document.body.clientWidth-2*MargenH)+'px';
document.getElementById('contenedor').style.height = (document.body.clientHeight-2*MargenV)+'px';
}